TY - BOOK AU - Judd,Kenneth L. AU - Maliar,Lilia AU - Maliar,Serguei ED - National Bureau of Economic Research. TI - Merging Simulation and Projection Approaches to Solve High-Dimensional Problems T2 - NBER working paper series PY - 2012/// CY - Cambridge, Mass. PB - National Bureau of Economic Research N1 - November 2012; Hardcopy version available to institutional subscribers N2 - We introduce an algorithm for solving dynamic economic models that merges stochastic simulation and projection approaches: we use simulation to approximate the ergodic measure of the solution, we construct a fixed grid covering the support of the constructed ergodic measure, and we use projection techniques to accurately solve the model on that grid. The grid construction is the key novel piece of our analysis: we select an ε-distinguishable subset of simulated points that covers the support of the ergodic measure roughly uniformly. The proposed algorithm is tractable in problems with high dimensionality (hundreds of state variables) on a desktop computer. As an illustration, we solve one- and multicountry neoclassical growth models and a large-scale new Keynesian model with a zero lower bound on nominal interest rates UR - https://www.nber.org/papers/w18501 UR - http://dx.doi.org/10.3386/w18501 ER -